The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 2010
Filed:
Sep. 24, 2004
Shoji Suzuki, San Jose, CA (US);
Wen Jiang, Fremont, CA (US);
Shoji Suzuki, San Jose, CA (US);
Wen Jiang, Fremont, CA (US);
WD Media, Inc., San Jose, CA (US);
Abstract
A disk drive with DTR media and method of assembly is described. The method may include aligning a discrete track recording (DTR) track pattern center on a DTR disk with a rotational center of a spindle hub and mounting the DTR disk on the spindle hub to minimize eccentricity. After the DTR disk is mounted to the spindle hub, it may be rotated to a designed rotational speed and the mass imbalance of the rotating DTR disk/spindle hub may be measured. The mass imbalance may be mitigated using a mechanical component such as a counter weight coupled to a spindle rotatable component, for example, the spindle hub, a spacer assembly, a clamp assembly, etc. The method may mitigate the eccentricity associated with DTR media and minimize run-out due to the mass imbalance of an otherwise rotated DTR disk/hub aligned for eccentricity correction.